5 gallon batches weren't too bad without a valve but 10 gallons became a chore. A Brewer's Edge Kettle valve kit has held up well for about 25 batches. It sits about 4" from the bottom of the pot placed on a propane burner. A step drill is best but a careful hand and a dremel work.
I have great results with dozens of ales at 70-74. Haven't needed a "swamp cooler" and lagers aren't worth my trouble. Stouts, pale ales, cider and mead keep me busy.
I've personally noticed minimal differences in cellaring an already-aged imperial stout. If a brewery releases a "green" beer and charges $20 I would pass. Living in an apartment doesn't allow me much room to cellar and my local store sells every beer as a single (2500+).
We stopped by on a slow Wednesday afternoon. I'm fairly sure the owner is retiring and it's not just a business decision. It's a simple operation and the beers were solid.